Heat sealing device

Abstract

The utility model discloses a heat sealing device which comprises a rack, a pushing mechanism is fixedly installed in the rack, a heat sealing machine and a lower heat sealing head are fixedly installed at the upper end and the lower end of the outer surface of the pushing mechanism respectively, an upper heat sealing head is fixedly installed on the lower surface of the heat sealing machine, and the upper heat sealing head is flush with the lower heat sealing head. The lower heat sealing head is used for supporting a material to be heat-sealed, and the surface of the lower heat sealing head can be provided with a needed seam shape. Through the design of the pushing mechanism, pressure can be evenly distributed in the whole heat sealing area through the operation of synchronously pressing towards the center, it is ensured that the whole seam area is evenly stressed, the heat sealing effect is more stable, and when the upper heat sealing head and the lower heat sealing head draw close to the center at the same time, the heat sealing effect is better. And air in the material can be discharged outwards more uniformly, so that the formation of bubbles is reduced, all parts of the material can be ensured to be in full contact and fused, the incompletely fused area is reduced, and the overall quality of the product is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic shower curtain production technology, specifically a heat sealing device. Background Technology

[0002] A shower curtain is a curtain-like item that hangs outside a bathtub with a shower head, or within the shower area. Shower curtains are primarily used to prevent shower water from splashing outside the shower area and to provide privacy for the person showering. Traditionally, shower curtains are made of materials such as plastic and fabric. However, plastic shower curtains require a heat-sealing machine during production to connect the various parts of the curtain into a complete product.

[0003] For example, the national authorized patent announcement number CN219467061U discloses a plastic heat-sealing device, including a worktable. The worktable includes a leveling part, a traction part, and an adhesive mechanism. A hydraulic cylinder is fixedly connected to the inner top wall of the worktable, and a fixed seat is fixedly connected to the extension end of the hydraulic cylinder. A cylinder is fixedly connected to the inner top wall of the fixed seat. The adhesive mechanism consists of a heating structure and a cooling structure. The heating structure includes a heating plate connected to the extension end of the cylinder via a partition plate and a heat-sealing head fixed to the bottom surface of the fixed seat. The cooling structure includes a liquid collection box fixedly connected to the outer wall of one side of the fixed seat, a heat dissipation component fixed to one side of the liquid collection box, a liquid box fixedly connected to the inner top wall of the fixed seat, a piston rod inserted into the inner wall of the liquid box, and a channel provided on the inner bottom wall of the heat-sealing head. This utility model shortens the curing time of the plastic below the heat-sealing head, improves the curing efficiency of the plastic heat-sealing area, and thus achieves the purpose of improving the efficiency of heat-sealing processing.

[0004] However, the aforementioned plastic heat sealing device applies pressure in a unidirectional direction during the heat sealing process. This causes the pressure to be gradually transmitted from one end to the other during the pressing process. As a result, the material gradually shifts or stretches under stress. This displacement is more pronounced, especially for soft or elastic materials. This can lead to inconsistent dimensions or deformation of the heat-sealed material, ultimately resulting in uneven heat-sealed seams that affect the product's appearance and function. Utility Model Content

[0005] The purpose of this invention is to provide a heat-sealing device to solve the problem mentioned in the background art that the heat-sealing process of materials is unidirectional, which causes the pressure to be gradually transmitted from one end to the other during the pressing process, resulting in the material gradually shifting or stretching under stress.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat sealing device includes: a frame, a pushing mechanism fixedly installed inside the frame, a heat sealing machine and a lower heat sealing head fixedly installed at the upper and lower ends of the outer surface of the pushing mechanism, an upper heat sealing head fixedly installed on the lower surface of the heat sealing machine, the upper heat sealing head being flush with the lower heat sealing head, and the lower heat sealing head being used to support the material to be heat sealed and having a required joint shape on its surface.

[0008] Preferably, the pushing mechanism includes a hydraulic rod, which is fixedly installed inside the frame. The piston rod of the hydraulic rod is fixedly installed on the lower surface of the lower heat sealing head, so that the hydraulic rod can push the lower heat sealing head to fit against the upper heat sealing head.

[0009] Preferably, four sets of U-shaped frames are fixedly installed inside the frame, with each pair of U-shaped frames facing each other. A first connecting rod and a second connecting rod are slidably installed inside each pair of U-shaped frames. A heat sealing machine is fixedly installed on the outer surface of the two sets of first connecting rods, and a lower heat sealing head is fixedly installed on the outer surface of the two sets of second connecting rods.

[0010] Preferably, each of the two sets of opposing first and second connecting rods is provided with a rack at one end, and a gear is rotatably installed between the two sets of opposing first and second connecting rods. The gear meshes with the racks of the two sets of opposing first and second connecting rods on both sides, and the gear is rotatably installed at one end of the frame.

[0011] Preferably, when the second connecting rod is pushed by the hydraulic rod through the lower heat sealing head, the second connecting rod will drive the first connecting rod together through the rack and pinion gear, causing the upper heat sealing head on the lower surface of the heat sealing machine to move closer to the center of the phase and fit against the lower heat sealing head.

[0012] Preferably, the outer surfaces of the first connecting rod and the second connecting rod are provided with guide rail grooves, the guide rail grooves are slidably installed on the outer surface of the guide rail block, and the guide rail block is fixedly installed in the U-shaped frame in a figure-eight shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the design of the heat sealing machine, upper heat sealing head, lower heat sealing head, and pushing mechanism, when pressing plastic shower curtains, the plastic shower curtain can be placed on the upper surface of the lower heat sealing head and the pushing mechanism can be activated. As the lower heat sealing head is pushed upward, the pushing mechanism simultaneously drives the upper heat sealing head on the lower surface of the heat sealing machine to descend synchronously. This allows the upper and lower heat sealing heads to press towards the center in a synchronized manner. This synchronous pressing operation means that the upper and lower heat sealing heads can apply pressure to the plastic shower curtain at the same time, ensuring that the pressure is evenly distributed throughout the heat sealing area. This avoids the problem of uneven pressure that occurs during unidirectional pressing, ensuring that the entire seam area is subjected to uniform force, making the heat sealing effect more stable. Furthermore, when the upper and lower heat sealing heads move towards the center at the same time, air in the material can be discharged more evenly, reducing the formation of air bubbles and ensuring that all parts of the material can fully contact and fuse, reducing incompletely fused areas, thereby improving the overall quality of the product. This avoids problems such as weak seams or poor appearance caused by air bubbles.

[0015] 2. Through the design of the hydraulic rod, first connecting rod, second connecting rod, and gears, when the plastic shower curtain is placed on the upper surface of the lower heat-sealing head and the hydraulic rod is activated to push the lower heat-sealing head upward, the lower heat-sealing head will drive the two sets of second connecting rods to rotate together through the rack and pinion on one side. The gears will then drive the rack on the other side to lower the first connecting rod. The first connecting rod will then drive the upper heat-sealing head on the lower surface of the heat-sealing machine to descend synchronously, achieving a synchronous pressing operation where the upper and lower heat-sealing heads move towards the center. This synchronous pressing operation has... It helps to apply uniform pressure to the upper and lower heat sealing heads, reducing stress concentration inside the material and avoiding material damage or cracks caused by excessive local stress. After the pressing is completed, when the hydraulic rod pulls it out, it can also expand the upper and lower heat sealing heads together, making the distance between the upper and lower heat sealing heads larger. This provides more operating space for the staff, increases flexibility, and provides more operating space for the operators. Especially when it is necessary to change materials, clean or maintain, the larger space makes the operation more convenient and faster. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the heat sealing device of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper heat sealing head and the lower heat sealing head of this utility model;

[0018] Figure 3 This is a schematic diagram of the pushing mechanism structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the guide rail groove and guide rail block of this utility model.

[0020] In the diagram: 1. Frame; 101. Heat sealing machine; 102. Upper heat sealing head; 103. Lower heat sealing head; 104. U-shaped frame; 105. Guide rail block; 2. Pushing mechanism; 201. Hydraulic rod; 202. First connecting rod; 203. Second connecting rod; 204. Gear; 205. Guide rail groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This embodiment provides the following technical solution:

[0023] like Figures 1-2 As shown, a heat sealing device includes: a frame 1, a pushing mechanism 2 fixedly installed inside the frame 1, a heat sealing machine 101 and a lower heat sealing head 103 fixedly installed on the upper and lower ends of the outer surface of the pushing mechanism 2, an upper heat sealing head 102 fixedly installed on the lower surface of the heat sealing machine 101, the upper heat sealing head 102 and the lower heat sealing head 103 being flush, the lower heat sealing head 103 being used to support the material to be heat sealed and having a surface capable of being provided with the required joint shape.

[0024] Through the design of the heat sealing machine 101, the upper heat sealing head 102, the lower heat sealing head 103, and the pushing mechanism 2, when pressing a plastic shower curtain, the plastic shower curtain can be placed on the upper surface of the lower heat sealing head 103 and the pushing mechanism 2 can be activated. As the lower heat sealing head 103 rises, the pushing mechanism 2 simultaneously drives the upper heat sealing head 102 on the lower surface of the heat sealing machine 101 to descend synchronously. This allows the upper heat sealing head 102 and the lower heat sealing head 103 to press together synchronously towards the center. This synchronous pressing operation means that the upper heat sealing head 102 and the lower heat sealing head 103 can... Simultaneous pressure application to the plastic shower curtain ensures even pressure distribution across the entire heat-sealing area. This avoids uneven pressure issues that occur during unidirectional pressing, ensuring uniform stress across the entire seam area and resulting in a more stable heat-sealing effect. Furthermore, as the upper heat-sealing head 102 and lower heat-sealing head 103 move towards the center simultaneously, air in the material can be expelled more evenly, reducing bubble formation and ensuring full contact and fusion of all parts of the material. This minimizes incomplete fusion areas, thereby improving the overall quality of the product and preventing issues such as weak seams or poor appearance caused by air bubbles.

[0025] like Figures 3-4As shown, the pushing mechanism 2 includes a hydraulic rod 201, which is fixedly installed inside the frame 1. The piston rod of the hydraulic rod 201 is fixedly installed on the lower surface of the lower heat sealing head 103, so that the hydraulic rod 201 can push the lower heat sealing head 103 to fit against the upper heat sealing head 102.

[0026] Four sets of U-shaped frames 104 are fixedly installed inside the frame 1. Each pair of U-shaped frames 104 are opposite to each other. A first connecting rod 202 and a second connecting rod 203 are slidably installed inside each pair of U-shaped frames 104. A heat sealing machine 101 is fixedly installed on the outer surface of the two sets of first connecting rods 202, and a lower heat sealing head 103 is fixedly installed on the outer surface of the two sets of second connecting rods 203.

[0027] Each of the two sets of opposing first connecting rods 202 and second connecting rods 203 has a rack at one end. A gear 204 is rotatably mounted between the two sets of opposing first connecting rods 202 and second connecting rods 203. The gear 204 meshes with the racks of the two sets of opposing first connecting rods 202 and second connecting rods 203 on both sides. The gear 204 is rotatably mounted at one end of the frame 1.

[0028] When the second connecting rod 203 is pushed by the hydraulic rod 201 through the lower heat sealing head 103, the second connecting rod 203 will drive the first connecting rod 202 together through the rack and pinion gear 204, causing the upper heat sealing head 102 on the lower surface of the heat sealing machine 101 to move closer to the center of the phase and fit with the lower heat sealing head 103.

[0029] The outer surfaces of the first connecting rod 202 and the second connecting rod 203 are provided with guide rail grooves 205. The guide rail grooves 205 are slidably installed on the outer surface of the guide rail block 105. The guide rail block 105 is fixedly installed in the U-shaped frame 104 in a figure-eight shape.

[0030] Through the design of hydraulic rod 201, first connecting rod 202, second connecting rod 203, and gear 204, when the plastic shower curtain is placed on the upper surface of the lower heat-sealing head 103 and the hydraulic rod 201 is activated to push the lower heat-sealing head 103 upward, the lower heat-sealing head 103 will drive the two sets of second connecting rods 203 to rotate together through the rack and pinion on one side. The gear 204 will then drive the rack and pinion on the other side to drive the first connecting rod 202 downward. The first connecting rod 202 can then drive the upper heat-sealing head 102 on the lower surface of the heat-sealing machine 101 to descend synchronously, realizing the pressing operation that brings the upper heat-sealing head 102 and the lower heat-sealing head 103 together at their synchronous center. This synchronous pressing operation helps to apply uniform pressure to the upper heat-sealing head 102 and the lower heat-sealing head 103, reducing stress concentration inside the material and avoiding material damage or cracks caused by excessive local stress. After pressing, when the hydraulic rod 201 pulls it out, the upper heat-sealing head 102 and the lower heat-sealing head 103 can also expand together, making the distance between the upper heat-sealing head 102 and the lower heat-sealing head 103 larger. This provides more operating space for the staff, increases flexibility, and provides more operating space for the operators. Especially when it is necessary to change materials, clean or maintain, the larger space makes the operation more convenient and faster.

[0031] Based on the above technical solution, the working steps of this solution are summarized as follows: When pressing the plastic shower curtain, the plastic shower curtain can be placed on the upper surface of the lower heat sealing head 103 and the hydraulic rod 201 can be activated to push the lower heat sealing head 103 upward. The lower heat sealing head 103 will drive the two sets of second connecting rods 203 to slide vertically within the U-shaped frame 104, and the two sets of gears 204 will rotate together through the rack and pinion on one side. The gears 204 will then drive the rack and pinion on the other side to drive the first connecting rod 202 to slide vertically downward within the U-shaped frame 104. The first connecting rod 202 can then drive the upper heat sealing head 102 on the lower surface of the heat sealing machine 101 to descend synchronously, thus achieving... To ensure that the upper heat-sealing head 102 and the lower heat-sealing head 103 are pressed together synchronously at their center, it helps to apply uniform pressure to the upper heat-sealing head 102 and the lower heat-sealing head 103, reducing stress concentration inside the material and avoiding material damage or cracks caused by excessive local stress. After the pressing is completed, when the hydraulic rod 201 pulls it out, it can also cause the upper heat-sealing head 102 and the lower heat-sealing head 103 to expand and unfold together, which can increase the distance between the upper heat-sealing head 102 and the lower heat-sealing head 103, providing more operating space for the operator. Especially when it is necessary to change materials, clean or maintain, the larger space makes the operation more convenient and faster.

[0032] In summary, this synchronous pressing operation towards the center ensures that the pressure is evenly distributed throughout the heat-sealing area. This avoids the uneven pressure problems that occur during unidirectional pressing, ensuring uniform stress throughout the joint area and making the heat-sealing effect more stable. Furthermore, when the upper heat-sealing head 102 and the lower heat-sealing head 103 move towards the center simultaneously, air in the material can be discharged more evenly, reducing the formation of air bubbles and ensuring that all parts of the material can fully contact and fuse, reducing areas that are not fully fused, thereby improving the overall quality of the product.

[0033] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat sealing device, characterized by Include: Frame (1), the push mechanism (2) is fixedly installed in the frame (1), the push mechanism (2) is fixedly installed on the outer surface of the upper end and the lower end of the push mechanism (2) respectively heat sealing machine (101) and lower heat sealing head (103), the lower surface of the heat sealing machine (101) is fixedly installed with upper heat sealing head (102), the upper heat sealing head (102) is flush with the lower heat sealing head (103), the lower heat sealing head (103) is used for supporting the material to be heat sealed and the surface can be provided with the required seam shape.

2. A heat sealing device according to claim 1, characterized in that: The push mechanism (2) includes a hydraulic rod (201), the hydraulic rod (201) is fixedly installed in the frame (1), the piston rod of the hydraulic rod (201) is fixedly installed at the lower surface of the lower heat sealing head (103), so that the hydraulic rod (201) can push the lower heat sealing head (103) to be attached to the upper heat sealing head (102).

3. A heat sealing device according to claim 1 or 2, characterised in that: The frame (1) is fixedly installed with four groups of U-shaped frames (104), every two groups of the U-shaped frames (104) are opposite, and the first connecting rod (202) and the second connecting rod (203) are respectively slidably installed in every two groups of the U-shaped frames (104), the outer surface of the two groups of the first connecting rod (202) is fixedly installed with the heat sealing machine (101), and the outer surface of the two groups of the second connecting rod (203) is fixedly installed with the lower heat sealing head (103).

4. A heat sealing device according to claim 3, wherein: One end of the two groups of opposite first connecting rods (202) and second connecting rods (203) is provided with a rack, a gear (204) is rotatably installed between the two groups of opposite first connecting rods (202) and second connecting rods (203), the gear (204) is meshed with the racks of the two groups of opposite first connecting rods (202) and second connecting rods (203) on both sides, and the gear (204) is rotatably installed at one end of the frame (1).

5. A heat sealing device according to claim 4, wherein: When the second connecting rod (203) is pushed by the hydraulic rod (201) through the lower heat sealing head (103), the second connecting rod (203) will drive the first connecting rod (202) through the rack transmission gear (204) to drive the upper heat sealing head (102) on the lower surface of the heat sealing machine (101) to move towards the center and be attached to the lower heat sealing head (103) at the same time.

6. A heat sealing device according to claim 5, wherein: The outer surface of the first connecting rod (202) and the second connecting rod (203) is provided with a guide groove (205), the guide groove (205) is slidably installed on the outer surface of the guide rail block (105), and the guide rail block (105) is fixedly installed in the U-shaped frame (104) in a spreader shape.

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